Ubuntu 14.04 LTS / 16.04 LTS / 16.10 / 17.04 : qemu vulnerabilities (USN-3289-1)

High Nessus Plugin ID 100250

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Li Qiang discovered that QEMU incorrectly handled VirtFS directory sharing. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2017-7377, CVE-2017-8086)

Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-7718)

Li Qiang and Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device when being used with a VNC connection. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile.
(CVE-2017-7980)

Jiang Xin discovered that QEMU incorrectly handled the audio subsystem. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2017-8309)

Jiang Xin discovered that QEMU incorrectly handled the input subsystem. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04.
(CVE-2017-8379).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

See Also

https://usn.ubuntu.com/3289-1/

Plugin Details

Severity: High

ID: 100250

File Name: ubuntu_USN-3289-1.nasl

Version: 3.5

Type: local

Agent: unix

Published: 2017/05/17

Updated: 2019/09/18

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:qemu-system, p-cpe:/a:canonical:ubuntu_linux:qemu-system-aarch64, p-cpe:/a:canonical:ubuntu_linux:qemu-system-arm, p-cpe:/a:canonical:ubuntu_linux:qemu-system-mips, p-cpe:/a:canonical:ubuntu_linux:qemu-system-misc, p-cpe:/a:canonical:ubuntu_linux:qemu-system-ppc, p-cpe:/a:canonical:ubuntu_linux:qemu-system-s390x, p-cpe:/a:canonical:ubuntu_linux:qemu-system-sparc, p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:16.10, cpe:/o:canonical:ubuntu_linux:17.04

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Patch Publication Date: 2017/05/16

Vulnerability Publication Date: 2017/04/10

Reference Information

CVE: CVE-2017-7377, CVE-2017-7718, CVE-2017-7980, CVE-2017-8086, CVE-2017-8309, CVE-2017-8379

USN: 3289-1